SsangYong Rexton. Manual — part 131
DI10-129
CHANGED BY
EFFECTIVE DATE
AFFECTED VIN
DIAGNOSIS
DI ENG SM - 2004.4
Trouble Code and Symptom
Diagnosis Procedures
1. Rail Pressure Control
Rail Pressure Control Fault
(Too High Pressure)
Maximum Value
Minimum Value
Trouble Code
Symptom
P1254
P1253
Unable Accelerometer Decoding
MIL ON
Unable Dynamic Leak of Injector #1
Unable Dynamic Leak of Injector #2
Unable Dynamic Leak of Injector #4
Unable Dynamic Leak of Injector #5
Unable Dynamic Leak of Injector #3
Unable Cylinder Balancing
Unable Accelerometer Learning Strategy
YES
YES
Read DTC
Rail preaaure sensor or IMV
Related DTC?
NO
Rail Pressure Sensor
Problem?
Check transfer fuel system
NO
Replace ECU
Refer to IMV
diagnosis
Repair or
replace
YES
YES
Transfer Fuel System
Problem?
Check high pressure fuel
system
NO
H/P Fuel System Problem?
Repair or
replace
Repair or
replace
NO
DI10-130
CHANGED BY
EFFECTIVE DATE
AFFECTED VIN
DIAGNOSIS
DI ENG SM - 2004.4
2. Transfer Fuel System
YES
YES
YES
Check fuel level
Fuel Exhausted?
“Visually check transfer fuel
system (fuel leaks, installation)”
NO
Transfer Fuel System
Problem?
Check if the air in transfer
fuel system is too much
NO
Excessive Air in Transfer
Fuel System?
Add fuel
Repair or
replace
Install a
container to
H/P pump
venturi.
Remove
venturi return
lines. Fill fuel
with hand
pump.
NO
Transfer fuel system is normal
3. High Pressyre Fuel System
YES
Check high pressure fuel
system
Cause Found?
NO
Add fuel
HP fuel system is normal
YES
Check fuel filter specification
Different Specification?
NO
Replace filter
with new one
DI10-131
CHANGED BY
EFFECTIVE DATE
AFFECTED VIN
DIAGNOSIS
DI ENG SM - 2004.4
Trouble Code and Symptom
Diagnosis Procedures
1. Diagnosis Procedures (Rail Pressure Control)
Rail Pressure Control Fault
(Too High IMV Current Trim, drift)
Small Delivery of Transfer Fuel
Large Delivery of Transfer Fuel
Small Delivery of High Pressure Fuel
Large Delivery of High Pressure Fuel
Trouble Code
Symptom
P1256
P1257
P1258
P1259
Unable Accelerometer Decoding
MIL ON
Unable Dynamic Leak of Injector #1
Unable Dynamic Leak of Injector #2
Unable Dynamic Leak of Injector #4
Unable Dynamic Leak of Injector #5
Unable Dynamic Leak of Injector #3
Unable Cylinder Balancing
Unable Accelerometer Learning Strategy
YES
YES
Read DTC
Rail preaaure sensor or IMV
Related DTC?
NO
Rail Pressure Sensor
Problem?
Check transfer fuel system
NO
Replace ECU
Refer to IMV
diagnosis
Repair or
replace
YES
YES
Transfer Fuel System
Problem?
Check high pressure fuel
system
NO
H/P Fuel System Problem?
Repair or
replace
Repair or
replace
NO
DI10-132
CHANGED BY
EFFECTIVE DATE
AFFECTED VIN
DIAGNOSIS
DI ENG SM - 2004.4
YES
YES
2. Diagnosis Procedures (Transfer Fuel System)
YES
YES
Check fuel level
Fuel Exhausted?
“Visually check transfer fuel
system (fuel leaks, installation)”
NO
Transfer Fuel System
Problem?
NO
Check fuel filter specification
Different Specification?
NO
Repiar Completed
Add fuel
Repair or
replace
Replace filter
with new one
NO
Check if the air in transfer
fuel system is too much
Excessive Air in Transfer
Fuel System?
NO
Install a
container to
H/P pump
venturi.
Remove
venturi return
lines. Fill fuel
with hand
pump.
3. Diagnosis Procedures (High Pressure Fuel System)
YES
Check transfer fuel system
Cause Found?
NO
Repair or
replace
H/P Fuel System - Normal
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